def test_fails_for_non_ipv6_packet(self):
payload = factory.make_bytes(48)
packet = make_ipv6_packet(payload=payload, version=5)
ipv6 = IPv6(packet)
self.assertThat(ipv6.is_valid(), Equals(False))
self.assertThat(ipv6.invalid_reason,
DocTestMatches("Invalid version..."))
def test_parses_ipv6_packet(self):
payload = factory.make_bytes(48)
packet = make_ipv6_packet(payload=payload)
ipv6 = IPv6(packet)
self.assertThat(ipv6.is_valid(), Equals(True))
self.assertThat(ipv6.version, Equals(6))
self.assertThat(ipv6.packet.payload_length, Equals(len(payload)))
self.assertThat(ipv6.payload, Equals(payload))
def test_fails_for_truncated_packet(self):
packet = make_ipv6_packet(truncated=True)
ipv6 = IPv6(packet)
self.assertThat(ipv6.is_valid(), Equals(False))
self.assertThat(ipv6.invalid_reason, DocTestMatches("Truncated..."))